Comment 10 for bug 829538

Would it be the right solution just allow to continue the slider in the xfader preferences?

This should be indeed a relative easy to fix we have to increase the maximum value of the "xFaderCurve" co.
https://github.com/mixxxdj/mixxx/blob/da0f31cd220c3ad878367a5abe14044812afeb44/src/engine/enginemaster.cpp#L144
And tweak the preference slider:
https://github.com/mixxxdj/mixxx/blob/3f854c1674084609497036ba92e1605a43fb492f/src/dlgprefcrossfader.cpp#L202

A insane value of 30 might work.

> However when I tried to create a script I got a BSOD!

The famous BSOD where you have to restart your computer?
This must not happen, and indicates a serious driver problem.
Please file a separate bug for it. Thank you.